Trace Element Determinations in Fe-Mn Oxides by High Resolution ICP-MS after Tm Addition

Type Article
Date 2021-10
Language English
Author(s) Charles ClaireORCID1, 2, Barrat Jean-AlixORCID2, 3, Pelleter EwanORCID1
Affiliation(s) 1 : IFREMER, Unité Géosciences Marines, Laboratoire Cycles Géochimiques (LCG), F-29280 Plouzané, France
2 : Univ Brest, CNRS, UMR 6538 (Laboratoire Géosciences Océan), Institut Universitaire Européen de La Mer (IUEM), Place Nicolas Copernic, 29280 Plouzané, France
3 : Univ Brest, CNRS, UMR 6539 (Laboratoire des Sciences de L’Environnement Marin), LIA BeBEST, Institut Universitaire Européen de La Mer (IUEM), Place Nicolas Copernic, 29280 Plouzané, France
Source Talanta (0039-9140) (Elsevier BV), 2021-10 , Vol. 233 , P. 122446 (9p.)
DOI 10.1016/j.talanta.2021.122446
Keyword(s) ICP-MS, Fe-Mn oxides, Trace elements, Rare earth elements, High-resolution, Tm spike

In order to propose an optimal analytical procedure specific to ferromanganese (Fe-Mn) oxides, we investigated different modes of data acquisition using inductively coupled plasma mass spectrometry (ICP-MS). The results of trace element and Rare Earth Element (REE) determination in eight Fe-Mn nodules and crusts (FeMn-1, GSMC-1, GSMC-2, GSMC-3, GSPN-2, GSPN-3, NOD-A-1 and NOD-P-1) are presented here. The analytical procedure involves chemical dissolution of the Fe-Mn oxides and addition of a thulium (Tm) spike. The correction of measured values from potential isobaric interferences was investigated using both corrections based on mono-elemental solutions, and data acquisition in the high-resolution mode. The obtained results show that the high-resolution acquisition mode is unnecessary to achieve high quality data for REE in Fe-Mn oxides. Using our revised method, we provide a consistent set of precise and accurate values for eight widely used but poorly characterized certified reference materials.

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